Foundational knowledge about UV radiation and the UV index scale.
Expert advice for sun-safe outdoor living
Browse all articles in the UV Basics category
Learn how to check and understand UV index levels for any city or travel destination worldwide. Essential knowledge for sun safety planning.
A behind-the-scenes look at how Daily UV Tracker delivers real-time UV data, personalised burn times and 16-day forecasts for 145,000+ destinations worldwide.
Temperature, clouds and rain don't predict sunburn — UV does. Why the UV index is the single most important number in any sun-safety decision.
A comprehensive global guide to the UV index — what it is, how it's measured, how it varies worldwide, and how to use it to protect your skin.
A clear answer to one of the most-asked sun-safety questions: at what UV index does sun exposure become genuinely dangerous, and how should you respond?
A complete breakdown of the UV index scale from 0 to 11+ — what each level means, what to wear, how long you can stay outside and how to respond at each step.
A regional tour of the global UV map — from the equatorial belt and high-altitude tropics to the southern hemisphere ozone hole — with hotspots and travel guidance.